Talisayon, S. D. (1990). Land resources carrying capacity of the Ilocos Region. Population/Development Planning and Research Project, National Economic and Development Authority.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTalisayon, Serafin D. Land Resources Carrying Capacity of the Ilocos Region. [Manila]: Population/Development Planning and Research Project, National Economic and Development Authority, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTalisayon, Serafin D. Land Resources Carrying Capacity of the Ilocos Region. Population/Development Planning and Research Project, National Economic and Development Authority, 1990.
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